Heyzap Ads Have Been Working For 5 Minutes After They No Longer Appear!

Please be nice to help someone,
Heyzap ads have been working for 5 minutes after they no longer appear!
I added the publisher ID in buildbox after I exported the project in Xcode,
The game was put in TestFLight, I installed it,5 minutes ads worked very well, exactly as they were set up.
I got out of the game and and when I come back the ads disappeared, I tested it after 12 hours and it's the same.
I mention that I only use advertisements from heyzap!(intersetial and Video).
I using last version of buildbox.

 

I read here how to add heyzap ads: https://www.buildbox.com/forum/index.php?threads/simple-rewarded-video-implimentation.452/
@Andy said **you should not need to manually add the HeyZap framework**

 

I want only to work with Heyzap ads, other 3rd party ad networks I dont need.

 

Some ads are limited to how many times they will show on a specific device. If they stop showing it's because the inventory of ads ran out.

 

Thank You for replay!
I allredy added UnityAds , and its work Fine.